Former Vice President Dick Cheney is charging the administration lied about the attack on the U.S. post in Benghazi, Libya, and is trying to cover up what happened.

“They lied. They claimed it was because of a demonstration video, that they wouldn’t have to admit it was really all about their incompetence,” Cheney told Fox News’s Sean Hannity on Monday. “They ignored repeated warnings from the CIA about the threat. They ignored messages from their own people on the ground that they needed more security.”

“I think it’s one of the worst incidences, frankly, that I can recall in my career ... if they told the truth about Benghazi, that it was a terrorist attack by an Al Qaeda-led group, it would destroy the confidence that was the basis of his campaign for reelection,” Cheney added. “They tried to cover it up by constructing a false story.”

Conservatives have criticized the administration for initially blaming the attack — in which U.S. Ambassador Chris Stevens and three others were killed — on an anti-Islamic YouTube video instead of labeling it a terrorist attack.

Cheney joins other conservatives in accusing the administration of playing politics with the incident in order to help Obama’s reelection campaign.